internal static PowerManagementNativeMethods.SystemBatteryState GetSystemBatteryState()
{
IntPtr status = IntPtr.Zero;
PowerManagementNativeMethods.SystemBatteryState batt_status;
try
{
status = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemBatteryState)));
uint retval = PowerManagementNativeMethods.CallNtPowerInformation(
5, // SystemBatteryState
(IntPtr)null,
0,
status,
(UInt32)Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemBatteryState))
);
if (retval == CoreNativeMethods.STATUS_ACCESS_DENIED)
{
throw new UnauthorizedAccessException("The caller had insufficient access rights to get the system battery state.");
}
batt_status = (PowerManagementNativeMethods.SystemBatteryState)Marshal.PtrToStructure(status, typeof(PowerManagementNativeMethods.SystemBatteryState));
}
finally
{
Marshal.FreeCoTaskMem(status);
}
return(batt_status);
}
GetSystemPowerCapabilities()
{
IntPtr status = IntPtr.Zero;
PowerManagementNativeMethods.SystemPowerCapabilities powerCap;
try
{
status = Marshal.AllocCoTaskMem(
Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemPowerCapabilities)));
uint retval = PowerManagementNativeMethods.CallNtPowerInformation(
4, // SystemPowerCapabilities
(IntPtr)null,
0,
status,
(UInt32)Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemPowerCapabilities))
);
if (retval == CoreNativeMethods.STATUS_ACCESS_DENIED)
{
throw new UnauthorizedAccessException("The caller had insufficient access rights to get the system power capabilities.");
}
powerCap = (PowerManagementNativeMethods.SystemPowerCapabilities)Marshal.PtrToStructure(status, typeof(PowerManagementNativeMethods.SystemPowerCapabilities));
}
finally
{
Marshal.FreeCoTaskMem(status);
}
return(powerCap);
}
internal static PowerManagementNativeMethods.SystemBatteryState GetSystemBatteryState()
{
if (PowerManagementNativeMethods.CallNtPowerInformation(
PowerManagementNativeMethods.PowerInformationLevel.SystemBatteryState,
IntPtr.Zero, 0, out PowerManagementNativeMethods.SystemBatteryState batteryState,
(uint)Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemBatteryState))
) == NativeAPI.Consts.Common.StatusAccessDenied)
{
throw new UnauthorizedAccessException(LocalizedMessages.PowerInsufficientAccessBatteryState);
}
return(batteryState);
}
GetSystemPowerCapabilities()
{
if (PowerManagementNativeMethods.CallNtPowerInformation(
PowerManagementNativeMethods.PowerInformationLevel.SystemPowerCapabilities,
IntPtr.Zero, 0, out PowerManagementNativeMethods.SystemPowerCapabilities powerCap,
(uint)Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemPowerCapabilities))
) == NativeAPI.Consts.Common.StatusAccessDenied)
{
throw new UnauthorizedAccessException(LocalizedMessages.PowerInsufficientAccessCapabilities);
}
return(powerCap);
}
internal static PowerManagementNativeMethods.SystemPowerCapabilities GetSystemPowerCapabilities()
{
var retval = PowerManagementNativeMethods.CallNtPowerInformation(
PowerManagementNativeMethods.PowerInformationLevel.SystemPowerCapabilities,
IntPtr.Zero, 0, out PowerManagementNativeMethods.SystemPowerCapabilities powerCap,
(uint)Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemPowerCapabilities))
);
if (retval == CoreNativeMethods.StatusAccessDenied)
{
throw new UnauthorizedAccessException(LocalizedMessages.PowerInsufficientAccessCapabilities);
}
return(powerCap);
}
internal static PowerManagementNativeMethods.SystemBatteryState GetSystemBatteryState()
{
PowerManagementNativeMethods.SystemBatteryState batteryState;
uint retval = PowerManagementNativeMethods.CallNtPowerInformation(
PowerManagementNativeMethods.PowerInformationLevel.SystemBatteryState,
IntPtr.Zero, 0, out batteryState,
(UInt32)Marshal.SizeOf(typeof(PowerManagementNativeMethods.SystemBatteryState))
);
if (retval == CoreNativeMethods.StatusAccessDenied)
{
throw new UnauthorizedAccessException(LocalizedMessages.PowerInsufficientAccessBatteryState);
}
return(batteryState);
}